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Self-rated changes in attitude and behavior, evaluated using the Life Change Inventory, Revised, at a 4-month follow-up. Error bars indicate ± 1 SEM (standard error of the mean). Asterisks indicate significant differences between psilocybin and placebo groups (***p < 0.001, *p < 0.01, #p < 0.05–0.07). The p-values have been adjusted for multiple comparisons within this analysis.
